Spin-phonon interaction in yttrium iron garnet

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dc.creatorOlsson, Kevin S.
dc.creatorChoe, Jeongheon
dc.creatorRodriguez-Vega, Martin
dc.creatorKhalsa, Guru
dc.creatorBenedek, Nicole A.
dc.creatorHe, Jiaming
dc.creatorFang, Bin
dc.creatorZhou, Jianshi
dc.creatorFiete, Gregory A.
dc.creatorLi, Xiaoqin
dc.date.accessioned2024-02-08T15:38:43Z
dc.date.available2024-02-08T15:38:43Z
dc.date.issued2021-07-01
dc.description.abstractSpin-phonon interaction is an important channel for spin and energy relaxation in magnetic insulators. Understanding this interaction is critical for developing magnetic insulator-based spintronic devices. Quantifying this interaction in yttrium iron garnet (YIG), one of the most extensively investigated magnetic insulators, remains challenging because of the large number of atoms in a unit cell. Here, we report temperature-dependent and polarization-resolved Raman measurements in a YIG bulk crystal. We first classify the phonon modes based on their symmetry. We then develop a modified mean-field theory and define a symmetry-adapted parameter to quantify spin-phonon interaction in a phonon-mode specific way in YIG. Based on this improved mean-field theory, we discover a positive correlation between the spin-phonon interaction strength and the phonon frequency.
dc.description.departmentCenter for Dynamics and Control of Materials
dc.description.sponsorshipThis research was primarily supported (J.C., M.R.-V., B.F., J.H., J.Z., G.A.F., and X.L.) by the National Science Foundation through the Center for Dynamics and Control of Materials: an NSF MRSEC under Cooperative Agreement No. DMR-1720595. J.H. acknowledges NSF Grant No. DMR-1729588. G.A.F acknowledges support from NSF Grant No. DMR-1949701. G.K. and N.A.B. were supported by the Cornell Center for Materials Research: an NSF MRSEC under Cooperative Agreement No. DMR-1719875.
dc.identifier.doiDOI: 10.1103/PhysRevB.104.L020401
dc.identifier.urihttps://hdl.handle.net/2152/123628
dc.identifier.urihttps://doi.org/10.26153/tsw/50422
dc.language.isoen_US
dc.relation.ispartofCenter for Dynamics and Control of Materials Publications
dc.rights.restrictionOpen
dc.subjectyttrium
dc.titleSpin-phonon interaction in yttrium iron garnet
dc.typeArticle

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